• Fan system

The long-life, low-noise, maintenance-free, low vibration fans used in Neg Furls negative pressure weighing chambers ensure stable operation over long periods of time and reduce maintenance costs.

• Double-layer negative pressure structure

The unique design of the double-layer negative pressure structure effectively avoids the risk of leakage and ensures a hermetically sealed and safe operating environment.

• Air flow performance

Excellent air uniform distribution performance ensures the stability of air flow in the working area, which is conducive to improving the accuracy of weighing.

• Air velocity adjustment

The air speed can be adjusted automatically or stepwise to ensure that the required cleanliness can be maintained under different working conditions.

• Liquid Tank Design

The special liquid tank design ensures perfect sealing and prevents any possible contamination or leakage.

• Internal and external structure

Consistent and neat design inside and out, with no dead space, facilitates cleaning and maintenance, and also ensures an aesthetic appearance.

• Wind speed control system

Manual frequency conversion system for wind speed, so that the wind speed in the main working area is always in a uniform operation state, adapting to different experimental requirements.

• Filter differential pressure display device

Filter differential pressure display device can monitor the effective operation of each filter channel in real time, prompting timely replacement or maintenance.

• Noise Control

The unique air duct design effectively controls the working noise of the whole machine, creating a quiet experimental environment.

• Even flow design

The equal flow design of the main working area can effectively control the spillage and uplift of dust and reagents when weighing and dispensing in the equipment, preventing inhalation hazards to human beings and avoiding cross-contamination.

• Operation area protection

The weighing operation area is protected by a Class 100 vertical laminar flow ISO 5 (NF, EN, ISO 14644-1), which complies with the requirements of FDA and EU GMP as well as China GMP.

• Environment and conditions of use

Suitable for use at temperatures from 5°C to 40°C, relative humidity of not more than 85% (no condensation), atmospheric pressure of 86kPa to 106kPa, and power requirements of AC380v, three-phase, 50HZ.

• Box structure material

The box structure material is SUS304# sanded stainless steel, thickness 1.0MM, welded flat, no dead corners, no welding marks on the surface treatment, to ensure the structure of the solid and beautiful.

• Chamber Material

Neg Furls negative pressure weighing chambers are constructed of high quality SUS304 stainless steel, which not only offers excellent corrosion resistance, but is also easy to clean and maintain, making it ideal for use in laboratory environments that require frequent cleaning and sterilization. Stainless steel is also resistant to a wide range of chemicals, ensuring stability over long periods of time.

Polymer homogeneous membrane

The polymer equalization membrane on the air outlet side ensures uniformity of air velocity, which is critical to maintaining a stable environment in the weighing chamber. The presence of the membrane reduces wind speed fluctuations and provides strong support for accurate weighing.

• Filtration System

The Neg Furls Negative Pressure Weighing Chamber is equipped with a two-stage filtration system of primary filters and high efficiency filters. This dual protection mechanism effectively captures airborne particles to meet DOP or PAO testing requirements and ensure a clean operating environment. The filters are easy to disassemble and replace from the front or the top, which greatly improves the working efficiency.

• Differential Pressure Gauge

The differential pressure gauge is an important component for monitoring the performance of the filter, which can reflect the working status of the filter in real time and help users know in time whether the filter needs to be replaced or cleaned. This feature is critical to maintaining the continued efficient operation of the negative pressure weighing chamber.

• Lighting / Sterilization

The interior of the weighing chamber is equipped with adequate lighting to ensure good visibility even in confined spaces. In addition, a germicidal lamp or ozone generator is provided to eliminate potential microbial contamination and to guarantee a clean weighing environment.

• Weighing tables and sockets

The Neg Furls Negative Pressure Weighing Cells are supplied with weighing benches that can hold a variety of weighing utensils, with options to suit the customer's needs. Waterproof and dustproof industrial sockets are also provided to meet the power requirements of different equipment.

Negative pressure weighing room adopts vertical unidirectional flow airflow form, the return air is first pre-filtered through the primary filter to remove large particles of dust particles, and then through the intermediate filter for secondary filtration, and finally under the pressure of the centrifugal fan, it passes through the high-efficiency filter, and sends the clean air to the working area, and at the same time, maintains the relative negative pressure between the operation area and the external environment, to prevent dust from diffusing to the outdoor area, and to ensure the degree of cleanliness.

Options. 

1	Wind Speed Sensor
2	Differential Pressure Sensor
3	converter
4	touchscreens
5	PLC control
6	Polymer homogeneous membrane